CHECK: Unnecessary parentheses around 'ctx->item != PGFAULT'
#159: FILE: samples/bpf/memcg.bpf.c:44:
+	if (ctx->id != local_config.high_cgroup_id ||
+	    (ctx->item != PGFAULT))

CHECK: Comparison to NULL could be written "!cgroup_path"
#339: FILE: samples/bpf/memcg.c:89:
+	if (cgroup_path == NULL) {

CHECK: Prefer kernel type 'u64' over 'uint64_t'
#356: FILE: samples/bpf/memcg.c:106:
+	uint64_t threshold = 0, high_cgroup_id;

CHECK: Alignment should match open parenthesis
#524: FILE: samples/bpf/memcg.c:274:
+		LIBBPF_OPTS_RESET(opts,
+			.flags = opts_flags,

CHECK: Alignment should match open parenthesis
#546: FILE: samples/bpf/memcg.c:296:
+		LIBBPF_OPTS_RESET(opts,
+			.flags = opts_flags,

total: 0 errors, 0 warnings, 5 checks, 504 lines checked

NOTE: For some of the reported defects, checkpatch may be able to
      mechanically convert to the typical style using --fix or --fix-inplace.

Commit f517b7048057 ("samples/bpf: Add memcg priority control example") has style problems, please review.

NOTE: Ignored message types: ALLOC_SIZEOF_STRUCT BAD_REPORTED_BY_LINK CAMELCASE COMMIT_LOG_LONG_LINE FILE_PATH_CHANGES GIT_COMMIT_ID MACRO_ARG_REUSE NO_AUTHOR_SIGN_OFF

NOTE: If any of the errors are false positives, please report
      them to the maintainer, see CHECKPATCH in MAINTAINERS.
total: 0 errors, 0 warnings, 5 checks, 504 lines checked